BEST Precision KR822689 Key Re...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$2,066.00
$1,505.78
Best Precision KR822689 2" x 3" x 8' Key Removable Mullion Aluminum Finish

BEST Precision KR822689 Key Removable Mullion 2" x 3" x 8' Aluminum Finish

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Model: KR822689
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$2,066.00
$1,505.78
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BEST Precision KR822689 Key Removable Mullion 2" x 3" x 8' Aluminum Finish

Professional Double Door Conversion Solution

The BEST Precision KR822689 Key Removable Mullion transforms double door openings into two single door openings for use with rim exit devices. This 2" x 3" steel mullion accommodates openings up to 8'-0" high and features a secure key removable design that allows quick removal when full opening width is required. The investment cast steel construction with aluminum finish provides durable performance for commercial applications.

Professional Features & Benefits

  • Flexible Opening Configuration: Converts double door openings to two single door openings with rim exit devices for enhanced security and code compliance.
  • Key Removable Design: KR option provides secure yet quick and easy mullion removal when full opening width is required, with reinstallation capability without key.
  • Standard Dimensions: 2" x 3" steel mullion designed for openings up to 8'-0" high, with field-cuttable capability for shorter openings.
  • Heavy-Duty Construction: Investment cast steel mullion base (2" wide x 3-1/2" deep) and cap assembly provide exceptional durability for commercial applications.
  • Complete Installation Package: Furnished with steel anchors for concrete floors and retrofits to existing MC822 mullion cap hole patterns.
  • Series Compatibility: KR822 model designed for non-fire-rated applications with rim panic devices, with FLKR822 model available for UL listed fire exit hardware applications.
  • Professional Finish: Aluminum finish provides corrosion resistance and professional appearance for commercial installations.

Technical Specifications

  • Commercial/Residential: Commercial
  • Department: Door Hardware
  • Parts and Accessories Type: Installation Accessories
  • Product Attribute: Parts and Accessories
  • Product Category: Key Removable Mullion
  • Product Finish: Aluminum
  • Product Group: Parts and Accessories
  • Product Subgroup: Parts and Accessories
  • Product Type: Exit Devices Parts
  • Series: KR822
  • Subcategory: Door Parts and Accessories

Installation & Operation

  1. Review manufacturer specifications and verify opening dimensions and floor preparation requirements for the 2" x 3" mullion base installation.
  2. Use manufacturer-provided templates to mark mounting hole locations accurately on floor surface for the investment cast steel base.
  3. Prepare floor by drilling required holes for steel anchors in concrete floors as specified in manufacturer instructions.
  4. Install mullion base using provided steel anchors and secure per manufacturer torque specifications.
  5. Install the 8' mullion section, cutting down as needed for openings less than 8'-0" high following manufacturer guidelines.
  6. Install key removable cap assembly, ensuring proper alignment with existing MC822 mullion cap hole patterns if retrofitting.
  7. Test key removal and reinstallation operation to verify proper function and security. Refer to manufacturer documentation for complete installation details and key operation procedures.

Professional Applications

  • Commercial Office Buildings
  • Educational Facilities
  • Healthcare Institutions
  • Retail Establishments
  • Industrial and Warehouse Facilities
  • Multi-Tenant Residential Properties
  • Government and Municipal Buildings

Why Choose BEST Quality?

BEST Precision mullion systems deliver professional-grade reliability with investment cast steel construction and aluminum finish for demanding commercial applications. The KR822 series provides secure key removable functionality while maintaining structural integrity and code compliance. Engineered for dependable performance in high-traffic commercial environments where flexible opening configurations are essential.

Manufacturer Resources

BEST Product Overview

Product Specs

Maximum Purchase:
1 unit
Product Group:
Parts and Accessories
Series:
KR822
Product Subgroup:
Parts and Accessories
Subcategory:
Door Parts and Accessories
Product Type:
Exit Devices Parts
Commercial/Residential:
Commercial
Parts and Accessories Type:
Installation Accessories
Product Attribute:
Parts and Accessories
Product Finish:
Aluminum
Product Category:
Key Removable Mullion
Department:
Door Hardware

BEST KR822689 – Frequently Asked Questions

1) Will the KR822 mullion work on a fire rated pair of doors?
No. The KR822 key removable mullion is built for non-fire-rated openings with rim panic devices. For UL listed fire exit hardware, BEST makes the FLKR822 instead. Putting a non-fire-rated mullion in a fire rated opening is the kind of substitution that fails inspection, so order the FLKR822 when the pair is rated.
2) What floor prep does a BEST key removable mullion need, and are the anchors included?
It lands on a cast steel base that measures 2" wide by 3-1/2" deep, and steel anchors for concrete floors come with it. You drill the floor to the template, set the base with those anchors, then cut and set the mullion section and the cap. The floor has to be able to take an anchored base, so it is a concrete slab job unless you are engineering something else at the threshold.
3) I have an old MC822 mullion in the floor. Can I put a KR822 in without redrilling?
Yes, that retrofit is stated outright: the KR822 cap assembly matches existing MC822 mullion cap hole patterns. That is the main reason to pick it when you are upgrading an older fixed or non-key-removable BEST Precision mullion, since the existing prep at the head stays.
4) My double doors use surface vertical rod devices and I was told to order a bottom rod assembly instead of a mullion. Which one applies?
They address two different ways of securing a pair of doors. The BEST Precision KR822689 key removable mullion is used when the openings are fitted with rim exit devices, which need a center post to latch into; the KR822 series is intended for non-fire-rated openings, with the FLKR822 covering UL listed fire exit hardware. The Corbin Russwin 649F99 is a bottom rod and end pin assembly for ED4000 and ED5000 series surface devices, which latch into the frame head and the floor and therefore need no center post at all. If the doors already carry surface vertical rod devices, the rod assembly is the repair part; if the doors carry rim devices, the mullion is what the opening requires.
5) Is a removable mullion better than vertical rod exit devices on a pair of doors?
Different trade-offs. With a mullion, both leaves take rim devices, which is the simplest hardware to maintain and the cheapest to replace, and the mullion carries the latching point. The cost is a post standing in the middle of the opening whenever it is installed, which is why the key removable version exists, so you can pull it for wide loads. Surface vertical rod devices leave the opening completely clear all the time but put rods, top latches and bottom latches on each door, which is more to adjust and more to break in high traffic. If the opening is a fire rated pair, note the KR822 is non-fire-rated and the FLKR822 is the fire version.
6) Does the KR822689 mullion come with the exit devices or strikes?
No. The KR822689 is the mullion itself, the cast steel base, the key removable cap assembly and steel floor anchors. The rim exit devices for each leaf and their mullion strikes are separate, and the removable cylinder for the key removable cap is ordered separately as well. Budget the pair as three line items: two rim devices, the mullion, and the cylinder.
7) Is this mullion heavy duty enough for a school or hospital entrance?
It is a commercial part, and the structural piece is investment cast steel at the base with a 2" x 3" steel mullion, which is what you want in a corridor pair that gets carts and gurneys through it daily. BEST lists it for office buildings, schools, healthcare, retail, industrial, multi-tenant residential and government work. The one thing to settle first for an institutional opening is fire rating: if the pair is rated, the KR822 is the wrong model and the FLKR822 is the one to specify.
8) Is a cylinder dogging kit for exit devices the same thing as a key removable mullion?
No. The BEST Precision KR822689 is a key removable mullion, a 2 inch by 3 inch steel post that stands in the middle of a double door opening and converts it into two single door openings so rim exit devices have something to latch into; it comes out with a key when the full opening width is needed. The Design Hardware Cylinder Dogging Kit for 1000 Series Exit Devices is a device-mounted accessory that adds key-controlled dogging to the exit device itself. One creates the strike point at the opening, the other changes how the pushbar holds retracted, so they are not interchangeable and a job that calls for a mullion is not satisfied by a dogging kit.
9) If I need to secure a pair of doors with no center post, does an exit alarm kit do the same job as the KR822689 mullion?
No. The BEST Precision KR822689 key removable mullion is an installation accessory that physically fills the center of a double door opening, mounted to the floor with steel anchors, so each leaf latches independently with a rim panic device. The Design Hardware Exit Alarm Kit for 1000 Series Exit Devices and the Exit Alarm Kit for 2000 Series Exit Devices are standard duty accessories that add local audible annunciation to an exit device already on the door. An alarm kit tells you the door was used; the mullion is what gives the rim device a latching point. Openings specified for a removable mullion need the mullion, and an alarm kit can be added to the devices separately.
10) What finish does the BEST KR822689 mullion come in?
One finish only, 628 satin aluminum. In practice that means it reads as clear anodized aluminum next to storefront and hollow metal frames rather than matching a 630 satin stainless or a dark bronze device. If the exit devices on the pair are 630 or 613, expect the mullion to be a visible shade off.
How fast can I get the BEST KR822689 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the BEST KR822689 come with a warranty?
Absolutely. The BEST KR822689 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the BEST KR822689?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the BEST KR822689 from ZenSupply?
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